Review note1 min read

Question 20 — needs review

A short personal note: I need to review the topic behind question 20 before returning to the problem.

Needs review · solution pending

QUESTION REFERENCE

Question 20 · 2026

Have your copy of Physics HL Paper 1A open alongside this study note.

Review note

I need to review the topic behind question 20 before returning to the problem.

This 13-second recording is a personal study update. A worked solution has not been added yet.

Video summary: I need to review some material for problem 20.

Open the video directly.

Next step

Review the relevant material, then return to question 20 in your own copy of the paper. The IB Physics reading map is available for finding topic readings.